Vacuum feeding machine for powdery veterinary drug production

Abstract

The vacuum feeding machine comprises a material pumping pipe, a separation tank and a negative pressure pipe, the separation tank is connected with the material pumping pipe, and the length direction of the end, close to the separation tank, of the material pumping pipe is located on the tangent line of the circle where the inner wall of the separation tank is located; a plurality of filters are arranged at the top of the separation tank, the filters are connected with a negative pressure pump through a negative pressure pipe, and a material blocking ring is arranged on the inner wall of the separation tank along the circumference and is arranged above the material pumping pipe. The material pumping pipe is connected with the tangent position of the separation tank, so that veterinary drug powder pumped by the material pumping pipe moves along the tank wall after entering the separation tank, and meanwhile, the powder is blocked by the material blocking ring, so that the veterinary drug raw material powder is prevented from directly moving towards the filter under the influence of the suction force of the top negative pressure pipe; but can fall down to the bottom of the separation tank under the action of self gravity, so that powder of veterinary drug raw materials is prevented from being attached to the filter.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical production, and in particular relates to a vacuum feeding machine for the production of powdered veterinary drugs. Background Technology

[0002] For some powdered veterinary drugs, the required raw materials need to be crushed and ground and then mixed in proportion during the production process. The production staff will put the ground powdered raw materials into the raw material tank, and then use a vacuum feeder to draw the raw materials from the raw material tank into the air-powder separator. After the raw materials are separated from the air and fall down, the gate at the bottom of the separator is controlled by the controller to make the raw materials fall into the mixing tank, so that the various raw materials are mixed and ground in a certain proportion, and then processed to produce the finished drug.

[0003] The vacuum feeder uses a negative pressure pump to generate negative pressure in the pipeline to draw the powder into the air-powder separator. In the existing technology, the negative pressure pump is connected to a set of PE filter elements to prevent the powder drawn into the negative pressure tank from entering the negative pressure pump and causing damage to the pump body, as well as to waste the powder. However, because the powder and air flow together, after a period of use, the powder mixed with the air will adhere to the filter element. Operators need to stop the machine and replace the filter element every once in a while, which affects work efficiency. Utility Model Content

[0004] In view of this, the present invention aims to provide a vacuum feeding machine for the production of powdered veterinary drugs, so as to reduce the amount of powder adhering to the filter element and reduce the frequency of filter element replacement.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A vacuum feeding machine for the production of powdered veterinary drugs includes a feeding pipe, a separation tank, and a negative pressure pipe. The separation tank is connected to the feeding pipe, and the length direction of the feeding pipe near the end of the separation tank is on the tangent of the circle containing the inner wall of the separation tank. The top of the separation tank is provided with multiple filters, which are connected to a negative pressure pump through the negative pressure pipe. A baffle ring is provided around the inner wall of the separation tank, and the baffle ring is positioned above the feeding pipe.

[0007] Furthermore, the bottom of the filter is positioned above the baffle ring.

[0008] Furthermore, the filter includes multiple tubular filter elements, and the negative pressure pipe communicates with the internal space of the filter elements.

[0009] Furthermore, the baffle ring is conical, and the height of the side of the baffle ring closest to the inner wall of the separator is higher than the height of the side furthest from the inner wall of the separator.

[0010] Furthermore, the inner wall of the separator is also provided with a baffle plate, the length direction of which forms an angle with the plane of the baffle ring, and the baffle plate is placed below the baffle ring, and the top of the baffle plate is connected to the baffle ring.

[0011] Furthermore, the lower surface of the baffle ring is provided with a plurality of turbulence protrusions along the circumference, and a turbulence recess is provided between each pair of adjacent turbulence protrusions.

[0012] Furthermore, the baffle plate is positioned between the axis of the extraction pipe and the center of the separation tank.

[0013] Furthermore, the width of the baffle plate is set radially along the separator tank.

[0014] Furthermore, the surface of the baffle plate is tangent to the opening of the discharge pipe.

[0015] Compared with existing technologies, the vacuum feeding machine for producing powdered veterinary drugs described in this utility model has the following advantages:

[0016] This utility model uses a tangential connection between the extraction pipe and the separation tank, so that the veterinary drug powder pumped by the extraction pipe moves along the tank wall after entering the separation tank. At the same time, the powder is blocked by the baffle ring, which prevents the powder of the veterinary drug raw material from being directly affected by the suction of the negative pressure pipe at the top and moving towards the filter. Instead, it can fall downwards to the bottom of the separation tank under its own gravity, thereby reducing the amount of veterinary drug raw material powder adhering to the filter.

[0017] A baffle plate is installed below the baffle ring to disrupt the airflow and allow the veterinary drug raw material powder to collide with the baffle plate during movement, thus preventing the veterinary drug from falling to the bottom of the separator tank more quickly under its own gravity.

[0018] By setting turbulence protrusions and turbulence indentations on the lower surface of the baffle ring, the airflow and powder moving along the inner wall of the separator are affected by the turbulence protrusions and turbulence indentations, forming turbulence, thereby reducing the movement speed of the powder and airflow, making it easier for the powder to fall to the bottom of the tank. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the vacuum feeder in Example 1;

[0021] Figure 2 This is a cross-sectional view of the internal structure of the vacuum feeder in Example 1;

[0022] Figure 3 This is a schematic diagram of the assembly of the baffle ring, the extraction pipe, and the baffle plate in Example 1;

[0023] Figure 4 This is a cross-sectional view of the internal structure of the vacuum feeder in Example 2;

[0024] Figure 5 This is a schematic diagram of the material-blocking ring, material-drawing pipe, and material-blocking plate in Example 2.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Separation tank; 2-Suction pipe; 3-Negative pressure pipe; 4-Baffle ring; 41-Turbulence recess; 42-Turbulence protrusion; 5-Baffle plate; 6-Filter element. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] The vacuum feeding machine for producing powdered veterinary drugs according to this utility model includes a separation tank 1, the side wall of which is connected to a suction pipe 2. The end of the suction pipe 2 near the separation tank 1 is positioned on the tangent of the circle containing the separation tank 1, so that the material pumped into the separation tank 1 by the suction pipe 2 can move along the inner wall of the separation tank 1. Multiple filters are fixed at the top of the separation tank 1, and a negative pressure pipe 3 is connected to the filters. Then, a negative pressure pump (not shown in the figure) is connected to the negative pressure pipe 3 to generate negative pressure in the separation tank 1, thereby drawing the powdered veterinary drug raw materials into the separation tank 1 through the suction pipe 2. The bottom of the separation tank 1 is also provided with a gate. In the prior art, the gate is equipped with a weight sensor. When the mass of the powder on the gate reaches a threshold, the cylinder on the gate can be controlled by the air circuit to open and close the gate, so that the powder falls into the mixing device below for further processing. The connection and control of the gate are all prior art, and their specific settings will not be described in detail here. The inner wall of the separator 1 is provided with a baffle ring 4, which is positioned above the extraction pipe 2, and the bottom end of the filter is positioned above the baffle ring 4. During operation, the end of the extraction pipe 2 is placed into the raw material box of veterinary drug powder. Under the action of the negative pressure pump, a negative pressure is formed in the extraction pipe 2, which draws the powder in the raw material box into the separator 1 for solid-gas separation. After the powder enters the separator 1, the powder moves in a circular motion along the tank wall due to the tangency of the extraction pipe 2 and falls along the tank wall under its own gravity. In the prior art, the extraction pipe 2 is mostly located in the middle of the separator 1, which causes the powder to disperse and float in the tank space after entering the separator 1. This makes the powder more susceptible to airflow and drawn towards the filter, resulting in the powder adhering to the filter. Compared with the prior art, this application allows the powder to fall gradually along the pipe wall, reducing the impact of airflow inside the can on the powder, thereby reducing the dispersion density of the powder in the can space, thus reducing the amount of powder adhering to the filter, reducing powder waste, and extending the service life of the filter.

[0033] The filter includes multiple tubular filter elements 6. The negative pressure pipe 3 is connected to the internal space of the filter element 6. In this embodiment, the filter element 6 is a PE filter element 6. The specific connection method between the PE filter element 6 and the negative pressure pipe 3 is the same as that in the prior art, and will not be described in detail here.

[0034] In this embodiment, the baffle ring 4 is conical, and the height of the side of the baffle ring 4 closest to the inner wall of the separator 1 is higher than the height of the side furthest from the inner wall of the separator 1, so that the baffle ring 4 forms an inverted V-shaped angle with the tank wall, further preventing the powder from being directly affected by the top suction and adhering to the filter. The lower surface of the baffle ring 4 is provided with multiple turbulence protrusions 42 along the circumference, and a turbulence recess 41 is provided between each pair of adjacent turbulence protrusions 42. This allows the airflow and powder ejected from the extraction pipe 2 to contact the turbulence protrusions 42 and turbulence recesses 41 at the beginning of their movement along the tank wall inside the tank, creating turbulence and reducing the flow velocity, so that the powder carried can fall to the bottom of the tank more quickly, accelerating the discharge speed. The inner wall of the separator 1 is also provided with a baffle plate 5. The length direction of the baffle plate 5 forms an angle with the plane where the baffle ring 4 is located. In this embodiment, the length direction of the baffle plate 5 is arranged along the axial direction of the separator 1, and the width of the baffle plate 5 is along the axial direction of the separator 1. The radial arrangement of the baffle plate 5 is positioned below the baffle ring 4, with the top of the baffle plate 5 connected to the baffle ring 4. The baffle plate 5 is positioned between the axis of the extraction pipe 2 and the center of the separation tank 1, so that after the powder enters the separation tank 1, it can move along the superior arc path of the extraction pipe 2, the baffle pipe and the baffle plate 5. This allows the airflow and powder to be disturbed by the turbulence protrusions 42 and turbulence depressions 41 multiple times, and then impact the baffle plate 5. After reducing the gas flow rate and the movement speed of the powder particles, the powder impacts the baffle plate and enters the tank. This avoids the large amount of powder spreading outward due to the direct impact of the powder on the baffle plate. While maintaining the extraction speed, the powder is prevented from spreading in the tank space.

[0035] Example 2

[0036] The difference between this embodiment and Embodiment 1 is that the surface of the baffle plate 5 is tangent to the opening of the discharge pipe, so that the length direction of the baffle plate 5 forms an angle with the surface of the baffle ring 4. This allows the powder to move towards the bottom of the tank under the guidance of the baffle plate 5 after moving along a curved path, thus avoiding collision with the high-speed airflow and powder entering the tank later, and preventing a large amount of powder from being impacted and dispersed in the tank space.

[0037] Those skilled in the art will know that, in order to further increase the service life, the filter can also be connected to a one-way blowing device so that after each extraction operation, the blowing device can provide positive pressure to the filter, causing the powder adhering to the filter to be blown off.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum feeding machine for the production of powdered veterinary drugs, characterized in that: It includes a material extraction pipe, a separation tank, and a negative pressure pipe. The separation tank is connected to the material extraction pipe, and the length direction of the material extraction pipe near the end of the separation tank is on the tangent of the circle containing the inner wall of the separation tank. The top of the separation tank is equipped with multiple filters, which are connected to a negative pressure pump through the negative pressure pipe. The inner wall of the separation tank is equipped with a baffle ring around its perimeter, and the baffle ring is positioned above the material extraction pipe.

2. The vacuum feeding machine for producing powdered veterinary drugs according to claim 1, characterized in that: The bottom of the filter is positioned above the baffle ring.

3. The vacuum feeding machine for producing powdered veterinary drugs according to claim 1, characterized in that: The filter includes multiple tubular filter elements, and the negative pressure pipe is in communication with the internal space of the filter elements.

4. The vacuum feeding machine for producing powdered veterinary drugs according to claim 1, characterized in that: The inner wall of the separator is also provided with a baffle plate. The length direction of the baffle plate forms an angle with the plane where the baffle ring is located, and the baffle plate is placed below the baffle ring. The top of the baffle plate is connected to the baffle ring.

5. A vacuum feeding machine for producing powdered veterinary drugs according to claim 1, characterized in that: The lower surface of the baffle ring is provided with multiple turbulence protrusions along the circumference, and there is a turbulence recess between each two adjacent turbulence protrusions.

6. A vacuum feeding machine for producing powdered veterinary drugs according to claim 4, characterized in that: The baffle plate is positioned between the axis of the extraction pipe and the center of the separation tank.

7. A vacuum feeding machine for producing powdered veterinary drugs according to claim 4, characterized in that: The width of the baffle plate is set along the radial direction of the separator.

8. A vacuum feeding machine for producing powdered veterinary drugs according to claim 4, characterized in that: The surface of the baffle plate is tangent to the opening of the extraction pipe.

9. A vacuum feeding machine for producing powdered veterinary drugs according to claim 1, characterized in that: The baffle ring is conical, and the height of the side of the baffle ring closest to the inner wall of the separator is higher than the height of the side furthest from the inner wall of the separator.

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